Free agency notes: Jake Long, physical corners, David Chao

Miami Dolphins quarterback Ryan Tannehill (17) congratulates Miami Dolphins tight end Anthony Fasano (80) after scoring a touchdown during the second half of an NFL football game against the St. Louis Rams, Sunday, Oct. 14, 2012 in Miami.To the right is Miami Dolphins tackle Jake Long (77). (AP Pho

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Miami Dolphins quarterback Ryan Tannehill (17) congratulates Miami Dolphins tight end Anthony Fasano (80) after scoring a touchdown during the second half of an NFL football game against the St. Louis Rams, Sunday, Oct. 14, 2012 in Miami.To the right is Miami Dolphins tackle Jake Long (77). (AP Photo/Lynne Sladky)

Miami Dolphins quarterback Ryan Tannehill (17) congratulates Miami Dolphins tight end Anthony Fasano (80) after scoring a touchdown during the second half of an NFL football game against the St. Louis Rams, Sunday, Oct. 14, 2012 in Miami.To the right is Miami Dolphins tackle Jake Long (77). (AP Photo/Lynne Sladky) (/ AP)

• Left tackle Jake Long was still unsigned going into Friday. ESPN's Adam Shefter said the Rams brought Long in for a 14-hour physical this week but a deal didn't follow. NFL.com reported Friday that the Dolphins are pushing to sign Long, a four-time Pro Bowler they drafted first overall. With Long seeking $11 million a year at the start of free agency, I wrote on March 11 that it may take "other teams being spooked" by Long's recent injuries for him to become affordable to the Chargers. It's a reminder that medical evaluations play a big role in personnel decisions. The Dolphins should know Long better than any other team.

• Both the Chargers and Chiefs made sizable investments in tall, physical cornerbacks. The moves could reflect a desire to match up with Broncos receivers Demaryius Thomas and Eric Decker. The Chiefs guaranteed $11 million to 6-foot-3 1/2 Sean Smith, who was 17th on my final ranking of free agents. Six-foot-1 and 195-pound Derek Cox, who was 20th on my list, received a $10.25 million guarantee from the Chargers, reports NBC's Pro Football Talk.

• Chargers doctor David Chao received good news recently when an independent panel of doctors found no fault with how the team's medical staff handled a concussion suffered by former Pro Bowl guard Kris Dielman in 2011, according to a copy of the report obtained by USA TODAY Sports.